def reset(self) -> None:
task = self._task() if self._task else None
if task is None:
raise ReferenceError("Task reference is not available anymore")
self.__exit__(None, None, None)
self._task = ReferenceType(task)
self.__enter__()
def append(self, item: T) -> "WeakImmutableList[T]":
"""Append an item and return a new list
:param item: the item to append
:return: a new list
"""
new_instance = WeakImmutableList() # type: WeakImmutableList[T]
new_instance.__list = self.__list.copy()
new_instance.__list.append(ReferenceType(item))
return new_instance
def __enter__(self) -> "Expires":
if self._task is None:
task = current_task(self.loop)
if task is None:
raise RuntimeError(
"Timeout context manager should be used inside a task")
self._task = ReferenceType(task)
else:
if self._cancel_handler is not None:
raise RuntimeError("This context is already in use")
if self._task() != current_task(self.loop):
raise ValueError("Can't change bound task after first use")
self.reset()
return self
def __enter__(self) -> "expires":
self._expired = False
if self._timeout is not None:
# Get current task
if self._task is None:
task = current_task(self.loop)
if task is None:
raise RuntimeError(
"Timeout context manager should be used inside a task")
self._task = ReferenceType(task)
self._expire_at = self.loop.time()
if self._timeout <= 0:
self._cancel_handler = self.loop.call_soon(self._expire_task)
else:
self._expire_at += self._timeout
self._cancel_handler = self.loop.call_at(
self._expire_at, self._expire_task)
return self
def append(self, item: T) -> "WeakImmutableList[T]":
new_instance = WeakImmutableList() # type: WeakImmutableList[T]
new_instance.__list = self.__cleanList()
new_instance.__list.append(ReferenceType(item))
return new_instance